Variable Flow Pump system with VFD
Variable Flow Pump system with VFD
(OP)
Hi all:
I am involved as electrical engineer in the designing of pump system for loading refrigerated products (PROPANE, BUTANE) to ships. This system will have a wide range of flow quantity since will be many different ships with many different capacities and flow rate limits. I am proposing a system of three pumps, 900HP each (2 operating and 1 spare). Just 1 pump will be drived by a VFD.
What should I consider to make a good design?
Should I specify the motor and the VFD in 460 V or in 4.16KV?
Thanks in advance.
I am involved as electrical engineer in the designing of pump system for loading refrigerated products (PROPANE, BUTANE) to ships. This system will have a wide range of flow quantity since will be many different ships with many different capacities and flow rate limits. I am proposing a system of three pumps, 900HP each (2 operating and 1 spare). Just 1 pump will be drived by a VFD.
What should I consider to make a good design?
Should I specify the motor and the VFD in 460 V or in 4.16KV?
Thanks in advance.





RE: Variable Flow Pump system with VFD
1.4MW.
460 will probably cost less and doesn't require specially trained installers. It is rather borderline.
Keith Cress
kcress - http://www.flaminsystems.com
RE: Variable Flow Pump system with VFD
Just to clarify, I am thinking in just 1 VFD..(1 pump will be driven by just 1 VFD)900 HP, 675KW.
The second one will be operated directly to line, and the third one will be just in spare.
RE: Variable Flow Pump system with VFD
Keith Cress
kcress - http://www.flaminsystems.com
RE: Variable Flow Pump system with VFD
----------------------------------
If we learn from our mistakes I'm getting a great education!
RE: Variable Flow Pump system with VFD
Keith Cress
kcress - http://www.flaminsystems.com
RE: Variable Flow Pump system with VFD
I am not with the mechanical considerations and the isolating transformer that should be used.